dang you might have better luck then me but mine broke the first day i got it..i was even tagging nice and slow but the sponge just ripped right off...
i put it on my 4oz krink drip mop and man did it suck! the mop that the krink comes with is really good(apreply) No. Its the same exact nib as the one that comes with the Krink Mop. You must have snagged it on something without knowing. Its fine. Just buy a few extra next time and carry one in your pocket when out and about. This is nothing new. Big Shoe polish mops are my fave and I have been using them for about 15 years. I always carry an extra nib when using these.